в) x² - 3x + 5 = 0
D = (- 3)² - 4 * 5 = 9 - 20 = - 11 < 0 - корней нет
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в) x² - 3x + 5 = 0
D = (- 3)² - 4 * 5 = 9 - 20 = - 11 < 0 - корней нет